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How Much Can Prompt Cache Save You? Mechanics, Real-World Hit Rates, and Three Writing Techniques

This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.

Most users checking their first bill ask: why is someone else's cost so much lower for the same model? The answer, eight times out of ten, is prompt cache . This article breaks down the billing mechanics, real-world hit rates, and how to structure prompts to capture the full discount. Billing Mecha…

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  1. 2026-10-30 04:16 · DEV Community — AI
    How Much Can Prompt Cache Save You? Mechanics, Real-World Hit Rates, and Three Writing Techniques

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